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NaOH concentrations used in the preparation of nickel-doped aerogels with the resulting physical properties and nickel nanocrystal morphology.
| Sample | NaOH concentration (M) | BET surface area (m2 g−1) | Average pore diameter (nm) | Pore volume (cm3 g−1) | Morphology of nickel nanocrystals |
|---|---|---|---|---|---|
| Ni1 | 0.5 | 300 | 4.6 | 0.89 | Sphere |
| Ni2 | 1 | 310 | 4.5 | 0.90 | Needle |
| Ni3 | 2 | 240 | 5.4 | 0.91 | Wire |
